Products

The Digital Multimeter DT4281 is Hioki’s flagship high precision multimeter, engineered for advanced electrical and power system testing. Featuring a 60000 count display, true RMS measurement, and industry leading safety design, it delivers fast, accurate results even in complex and high energy environments.

Key Features

• High resolution 60000 count digital multimeter
• Excellent DC voltage accuracy of ±0.025 percent
• Wide AC voltage frequency range from 20 Hz to 100 kHz
• True RMS measurement for accurate readings on distorted waveforms
• Low pass filter for inverter and harmonic rich signals
• Clamp sensor based current measurement for enhanced safety
• Terminal shutter mechanism to prevent incorrect lead insertion
• Dual display for simultaneous voltage and frequency monitoring
• CAT IV 600 V and CAT III 1000 V safety rated
• Designed and manufactured in Japan with 3 year warranty

The DM7275 Precision DC Voltmeter is a high stability 7 and a half digit DC voltmeter designed to bridge the gap between research environments and high volume production lines. With a guaranteed one year accuracy of 20 ppm, it delivers reliable and repeatable measurements for lithium ion batteries, advanced capacitors, and next generation electronic components.

Key Features

• 7 and a half digit DC voltage measurement
• 1 year guaranteed 20 ppm accuracy
• Ideal for R and D and production line testing
• Capacitance contact check using built in C monitor
• Fully automatic self calibration for long term stability
• Resistant to temperature fluctuations
• Simultaneous voltage and temperature measurement
• Temperature compensated voltage display
• Built in EXT I O, LAN, and USB interfaces
• Optional GP IB or RS 232C communication models
• Built in variable power supply for global production use

The DM7275 Precision DC Voltmeter provides 7½-digit resolution and 20 ppm accuracy, making it perfect for R&D, production lines, and high-precision battery testing. Its advanced contact check, temperature compensation, and multiple connectivity options ensure reliable measurement for lithium-ion batteries, EV components, and next-generation devices.

Key Features

• High-accuracy 7½-digit DC voltmeter with 20 ppm (0.002%) guaranteed accuracy
• Built-in capacitance contact check for maximum measurement reliability
• Temperature compensation converts voltage to standard temperature values
• Fully automatic self-calibration for long-term stability
• Built-in EXT I/O, LAN, USB, GP-IB (DM7275-02), and RS-232C (DM7275-03)
• Supports R&D and production line environments worldwide
• Simultaneous measurement of temperature and voltage
• Ideal for Li-ion batteries, EV components, and electrical double-layer capacitors

The DM7276 Precision DC Voltmeter is a 7 and a half digit high accuracy instrument designed for ultra precise DC voltage measurement. With industry leading 9 ppm accuracy, it is ideal for lithium ion battery aging tests, capacitor evaluation, and next generation energy device development.

Key Features

• 7 and a half digit precision with 9 ppm accuracy
• Designed for lithium ion battery aging and evaluation
• Built in capacitance contact check for reliable measurements
• Fully automatic self calibration for long term stability
• Resistant to temperature fluctuations and environmental changes
• Simultaneous voltage and temperature measurement
• Temperature compensated voltage display
• Supports global production with variable power supply
• Built in EXT I O, LAN, and USB interfaces
• Optional GP IB or RS 232C communication models

The DMM Station MR8990 combined with the MR8740 or MR8741 Memory HiCorder delivers high precision, simultaneous DC voltage measurement across up to 32 channels. Designed for capturing minute voltage fluctuations, this system is ideal for advanced sensor analysis, battery testing, and automotive electronics evaluation.

Key Features

• High precision DC voltage measurement using DVM Unit MR8990
• Simultaneous sampling across multiple channels
• Supports up to 32 channels with expandable configuration
• Measures minute voltage fluctuations with high resolution
• Accuracy of ±0.01 percent with 1.2 million count resolution
• High speed sampling up to 500 samples per second
• Isolated inputs for enhanced safety and signal integrity
• Suitable for battery, sensor, and automotive testing
• Rack mountable system for laboratory and production use
• Compatible only with MR8740 and MR8741 Memory HiCorders

The SM7120 Super Megohm Meter provides rapid, ultra-low current and high-resistance measurement, making it perfect for automated production lines, high-voltage applications, and precise testing of electronic components, EV parts, and insulation materials. Its 2000 V output, exceptional noise resistance, and flexible design ensure reliable, repeatable measurements even in complex environments.

Key Features

• 6.4 ms high-speed measurement including contact check
• Maximum 2000 V output for high-voltage testing
• 0.1 fA ultra-low current resolution for precise detection
• 2 × 10¹⁹ Ω maximum display range
• 300x improved noise resistance for stable results
• Built-in EXT I/O, RS-232C, GP-IB, and USB connectivity
• Multipurpose functionality: Electrometer, Picoammeter, IR Meter
• Ideal for electronic components, EVs, wearables, and insulation testing

The SM7420 Super Megohm Meter offers ultra-low current measurement with 4-channel simultaneous testing, making it ideal for automated production lines and high-precision inspection of passive components like capacitors and filters. Its advanced noise resistance, channel-independent contact checks, and multiple connectivity options ensure accurate, repeatable, and high-speed performance for mass production.

Key Features

• Four-channel ultra-low current measurement with 0.1 fA resolution
• Industry-leading noise resistance, 300x better than previous models
• High-speed testing: 6000 ps/minute for mass production efficiency
• Channel-independent low-capacitance contact check
• Built-in EXT I/O, RS-232C, GP-IB, and USB connectivity
• Ideal for automated MLCC leakage current inspection lines
• Supports integration into automated production systems

The SW2001 High Voltage Multiplexer is a durable and reliable solution designed to simplify complex motor testing setups. It allows safe and seamless switching between high voltage testing and 4 terminal low voltage measurements, helping manufacturers improve efficiency, accuracy, and equipment protection across production lines.

Key Features

• Consolidates six motor tests into one multiplexer system
• Enables safe switching between high voltage and low voltage measurements
• Supports resistance, inductance, surge, hipot, insulation resistance, and partial discharge tests
• Available in 4, 8, and 16 channel configurations
• Reduces test time and manual reconnections
• Protects low voltage instruments from stored energy damage
• Designed for long service life with high durability relays

Applications:

• Aerospace & Defense – Avionics, MIL-STD-704, EMC compliance, 400Hz & wild frequency testing
• EV Charging & V2G/V2H Testing – On-board chargers, grid-tied inverters, smart grid simulation
• Energy Storage & Renewable Systems – Home ESS, solar PV/grid-tied inverter testing
• Industrial Power Simulation – Frequency conversion, harmonic analysis, transient simulations
• Smart Grid & Compliance Testing – IEC 61000, RTCA DO-160, IEEE 1547, and more

Applications

• Aerospace & Avionics – Frequency conversion (400Hz & wild frequency testing), MIL-STD compliance
• EV Charging & Power Electronics – On-board chargers (OBC), V2G/V2H testing, battery simulation
• Renewable Energy Systems – Solar PV/grid-tied inverter testing, home ESS & smart grid simulations
• Power Supply & Industrial Testing – AC/DC power supply evaluation, network server & data center testing
• Research & Development Labs – High-frequency power testing, compliance verification, transient simulations

Applications

• Aerospace & Avionics Testing – 400Hz & wild frequency (360Hz-800Hz) compliance
• EV Charging & Power Electronics – AC/DC conversion, V2G, V2H, and OBC testing
• Renewable Energy & Smart Grid – Solar PV inverters, energy storage & grid simulation
• Industrial Power & Manufacturing – AC power supply testing, production line QA
• R&D & Compliance Labs – IEC61000, MIL-STD-704, RTCA DO-160 testing
• Railway Power Systems – 16.6Hz & 400Hz frequency compliance

High-Power 4-Quadrant AC & DC Power Source with Load Option

• Powerful & Versatile: 12kVA / kW to 21kVA / kW in a 4U chassis. Parallel units up to 168kVA/kW (single cabinet)or 252kVA/kW (dual cabinet).
• Multi-Phase Flexibility: Supports single-phase, split-phase, and three-phase configurations with AC, DC, or AC+DC output.
• Grid Simulation & Compliance Testing: Emulates real-world power grid conditions, simulating disturbances, harmonics, and interharmonics for accurate renewable energy testing (solar inverters, EV charging, microgrid, and UPS applications).
• Regenerative Efficiency: Over 90% energy recovery back to the grid reduces power consumption and operational costs.
• Advanced Control & Monitoring: SmartSource Suite enables remote control via an intuitive web browser interface with LAN, USB, GPIB, and RS232 connectivity.

4-Quadrant Programmable Load with Energy Recovery

• Powerful & Scalable: 6kVA/kW to 21kVA/kW in a compact 4U chassis. Parallel units up to 168kVA/kW per cabinet or 252kVA/kW in dual cabinets.
• Versatile Load Simulation: AC and DC load capability with single-phase, split-phase, and three-phase configurations.
• Grid-Ready Compliance Testing: Supports IEEE 1547, UL 1741, IEC 61000-3, IEC 61000-4 compliance testing.
• Energy-Efficient Regeneration: Returns over 90% of absorbed power back to the grid, reducing operational costs.
• Dynamic Load Emulation: Simulates linear and non-linear loads, harmonics, transient conditions, and waveform distortions.
• High-Speed Smart Control: SmartSource Suite for real-time test automation and remote monitoring.

High-Power AC/DC Load Simulator with PHIL Interface

• Scalable Power Density: Available in 30kVA/kW, 45kVA/kW, and 55kVA/kW models, with parallel cabinets up to 550kVA/kW.
• Versatile AC/DC Load Capability: Supports single-phase, split-phase, three-phase, and multi-channel configurations.
• Dual Constant Power Voltage Ranges:
  • AC Voltage: 5-220V L-N / 9-380V L-L & 5-440V L-N / 9-760V L-L
  • DC Voltage: 0-335Vdc & 9-650Vdc
• Advanced PHIL Interface (Option H): High-speed analog I/O for real-time frequency, voltage, and current control.
• Regenerative Power Efficiency: Returns over 90% of absorbed energy back to the grid, reducing operational costs & heat dissipation.
• Dynamic Load Simulation: Simulates harmonics, transient conditions, and waveform distortions for real-world power testing.
• SmartSource Suite for Remote Control: Web-based monitoring and test automation via LAN, USB, GPIB, and RS232.

• Compact, air-cooled OEM style
• Superior pulse repeatability
• Simple parallel operation for higher power
• Optional Active PFC (pf = 0.98)
• Full remote control interface
• High EMI-RFI immunity

• Advanced semiconductor technology
• High-quality construction
• Rapid capacitor and pulse-forming network charging
• Compact and lightweight design
• Simple parallel operation for higher power needs
• Compatible with worldwide input voltages and frequencies
• Fully adjustable output voltage
• Comprehensive remote control interface